In the accompanying video, New England Boating’s Tom Richardson shows how to make a waterproof terminal connector for marine applications. Here are the basic steps involved:
Select the proper gauge wire based on the wire length and amperage needs. Always use marine-grade, tinned-copper wire.
Remove ¼” of the wire insulation.
Select the proper size ring connector for the wire. Ring connectors are preferred over spade connectors as they cannot be pulled off the terminal. Also, use connectors featuring epoxy-coated heat shrink tubing.
Slide the end of the wire into the connector and crimp using a crimping tool that applies even pressure to both sides of the sleeve.
Test the connection by tugging on the end of the wire.
Use a heat gun to apply even heat to the heat shrink tubing. Heat until the epoxy bubbles out the end of the sleeve.